Chinese scientists create a sweat-activated jacket that changes thickness, keeping wearers warm in the cold and cool during exertion.
In cold weather, people layer up to stay warm. Thick coats, scarves, and gloves trap heat and block icy winds. But most winter clothing can’t adapt when our bodies heat up during activity.Walking briskly, shovelling snow, or cycling in a winter coat can lead to overheating.
Sweat builds up inside the layers, leaving you hot, sticky, and uncomfortable. Many people end up removing a layer, which leaves them exposed to the cold again.For decades, textile makers have focused on lighter, more breathable fabrics. Yet, truly adaptive cold-weather clothing has been rare outside of high-performance sports gear. That gap is what a team of scientists in China decided to address.Membrane that changes thicknessXiuqiang Li at Nanjing University of Aeronautics and Astronautics led the project. His team used a bacterial cellulose membrane as the jacket’s filling. The membrane automatically changes its thickness depending on humidity.In cool, dry air, it stays 13 millimeters thick to retain warmth. When humidity rises, such as during sweating, it shrinks to just 2 millimeters. This allows the jacket to keep wearers warm when needed and cool them down during exertion.The team first tested the membrane in a controlled lab environment. They used a system that mimics human skin to measure thermal performance under varying conditions. After that, they integrated the material into commercial down jackets for real-world trials.Volunteers wore the jackets while walking or cycling outdoors. Researchers tracked their comfort levels, body temperature, and the membrane’s response to humidity.Concept of sweat-sensitive winter clothing. Credit – Science AdvancesThe researchers reported that “Our sweat-sensitive adaptive warm clothing can expand the thermal regulation capability by up to 82.8% compared to traditional textiles.” They also wrote that the clothing can “extend the no-thermal stress zone by an average of 7.5 hours across 20 cities.”The technology could benefit people working outdoors in varying conditions. Sanitation workers, couriers, and police officers could remain comfortable for longer periods without removing layers.Despite its promise, the product is not yet ready for retail. More research will test the membrane’s performance in extreme cold and wet environments. Durability over months or years of use also remains a question.The team will study how the bacterial cellulose behaves when exposed to constant movement, compression, and washing. Another challenge is scaling up production while keeping the material affordable.If successful, sweat-sensitive insulation could mark a new chapter in cold-weather clothing. Future designs might use it in parkas, vests, gloves, or even sleeping bags. The same principle could help regulate body temperature in military uniforms or space gear.For now, the innovation offers a glimpse into a future where winter clothing works with the body, not against it.Instead of choosing between overheating and freezing, wearers could enjoy consistent comfort for hours, regardless of activity levels or changing weather.The study is published in the journal Science Advances.
Bacterial Cellulose Membrane Smart Textiles Sweat-Activated Jacket Thermal Regulation Wearable Tech Winter Wear Innovation
United States Latest News, United States Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Scientists create skin-safe adhesive for wearables that grips harder with sweatTexas A&M researchers developed a water-based adhesive that grips skin better with sweat—without irritation or rashes.
Read more »
Fanatics Sportsbook promo: Start Your 10-Day No Sweat Bets Journey for NFL Preseason Week 1Start your 10-day bonus journey with the Fanatics Sportsbook promo for NFL Preseason Week 1 and get up to $1,000 in No Sweat Bets.
Read more »
Fanatics Sportsbook promo: Your 10-Day No Sweat Bets Journey Starts With NFL Preseason Week 1Start your 10-day bonus journey with Fanatics Sportsbook's promo for NFL Preseason Week 1 — and get up to $1,000 in No Sweat Bets.
Read more »
Fanatics Sportsbook promo: Start Your 10-Day No Sweat Bets Journey for NFL Preseason Week 1Kick off NFL Preseason Week 1 with a Fanatics Sportsbook promo—start your 10-day journey for up to $1,000 in bonus bets now!
Read more »
Fanatics Sportsbook Promo: Get Up to $1,000 in No-Sweat Bets for the NFL PreseasonScore big this NFL Preseason with Fanatics Sportsbook! Enjoy 10 days of No Sweat Bets worth up to $1,000 — no promo code required.
Read more »
Jacket that gets thinner when you sweat could help avoid overheatingA material made from bacterial cellulose alters its insulating properties in dry and moist conditions, which could help you stay a comfortable temperature whatever the weather
Read more »